I’m trying to do a search across multiple categories like:
category:10,11,12 but it seems to use only the first one.
Am I missing some syntax? I presumed the same as for tags?
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Unfortunately you cannot search across multiple categories, this is only supported for tags. I will move your topic to feature, as it is a reasonable request.
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Thanks David, I wonder if for time being it then would be ok to just append it as local href:
search?q=status%3Anoreplies%20after%3A7%20-tags%3Aknowledge-base%20in%3Aunseen%20order%3Alatest
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Wanted to add this would be handy for us too.
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跨类别搜索将为查找一个类别以上未解决的主题提供一种解决方法。搜索 status: unsolved 会返回不希望的结果，因为它包含了没有已解决的主题。
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有了新的过滤器，这将成为可能。 
不过仍处于实验阶段，但已在 Meta 上上线，如果您想尝试一下。 
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